package com.zhubayi.interceptor;

import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @author 祝八一
 */
@Component
public class AdminInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object handler)
            throws Exception {
        HttpSession session = request.getSession();
        Object admin = session.getAttribute("admin");
        if (admin==null){
            request.setAttribute("msg", "无权限请先登录");
            request.getRequestDispatcher("/admin/tologin").forward(request, response);
            return false;
        }else {
            return true;

        }
    }

    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response, Object handler,
                           @Nullable ModelAndView modelAndView) throws Exception {

       // System.out.println("...........CustomInterceptor postHandle...........");
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response, Object handler,
                                @Nullable Exception ex) throws Exception {

       // System.out.println("...........CustomInterceptor afterCompletion...........");

    }
}
